Planetary Radio

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Celebrating Kepler The Kepler mission has ended. Listen to highlights of the October 30th media briefing that included the father of the fantastically successful planet finder, William Borucki. Then catch the thoughts of Planetary Society editors and commentators Jason Davis and Emily Lakdawalla. And we’ll… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Sailing to an Asteroid on the Light of the Sun NASAs Marshall Space Flight Center and the Jet Propulsion Lab are preparing to send NEA Scout on a long, light-propelled journey to a near Earth asteroid. — OLightSail 2 is not the only solar sail… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Back to Saturn for Brand New Cassini Science Our most frequent guest returns with exciting, just-published research enabled by the 20-year missions enormous success. Linda Spilker has served as Cassini Project Scientist for 8 years, and was Deputy Project Scientist for the previous 13. Youll… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Celebrating Astronomy Day with the Giant Magellan Telescope We salute humankinds long history of stargazing by checking in on what will be our planets largest telescope.–Happy Astronomy Day, October 13, 2018! We salute humankinds long history of stargazing by checking in on what will be… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT John Logsdon and the Dawn of the Space Age The Dean of space policy, John Logsdon, returns with stories and a new book of original documents that shaped the US space program from the birth of NASA to SpaceX. Planetary Society CEO Bill Nye reports… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Return to Fiery Mercury With BepiColombo Elsa Montagnon is Spacecraft Operations Manager for the European/Japanese mission leaving for our solar systems innermost planet very soon. She joins us to talk about the long journey ahead. Elsa also has the cover article in the brand new… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Opportunity, Phone Home! The dust is settling on the Red Planet. Is the remaining Mars Exploration Rover about to rise and shine after three months of slumber? MER Project Manager John Callas returns with a realistic yet hopeful assessment. He also tells us what Opportunity… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Pluto Occults! Join Us on the Mountain Pluto passed in front of a star on the evening of August 14. Mat Kaplan joined pro and amateur astronomers on a mountain to observe this rare event. It may reveal more about the dwarf planets tenuous atmosphere… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Giving Venus the Love (and Science) She Deserves We have so much to learn about Venus, says JPL scientist Sue Smrekar. What we learn will help us understand our own world and Mars. Sue joins us this week to make a great case for a… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Dark Energy Co-Discoverer and the Leader of Chinese Space Science It has been 20 years since we learned the expansion of the universe is accelerating due to the mysterious force called dark energy. Saul Perlmutter shared the Nobel Prize in Physics because of his contributions…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Diving Into That Lake on Mars Our world was rocked by last weeks announcement of good radar evidence for a liquid water lake under the Red Planets south pole. Senior Editor Emily Lakdawalla introduces us to the story that is then taken up by two… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT HAYABUSA2 REACHES A DARK DIAMOND IN SPACE Japans Hayabusa2 is just 6 kilometers from asteroid Ryugu as it prepares to snatch samples of the space rock for return to Earth. Mission Project Manager Hitoshi Kuninaka joins us for a conversation about the spacecraft and whats… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Something Old and Something New: Exciting Research on the International Space Station Sextants have helped sailors find their way across oceans for centuries. Now one is onboard the International Space Station so that astronauts can learn to find their way across the solar system even… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Dwarf Planet Ceres Thrills as a Dying Visitor Closes In Ceres is the queen of the asteroid belt. Her first Earthly visitor is nearing its last days in spectacular style. Dawn Mission Director and Chief Engineer Marc Rayman returns with stunning images taken from just… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Its Asteroid Week with NASAs Planetary Defense Officer The dinosaurs regret their lack of a space program. 200 million years later, humans are gearing up to defend themselves from a species-ending rock. The many challenges involved are addressed in a new strategic action plan created… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Kathryn Sullivan and More at the International Space Development Conference Freeman Dyson wasnt the only space star at the ISDC. Mat talks with former astronaut and NOAA Administrator Kathryn Sullivan and leaders of the Cassini mission. Planetary Society Director of Space Policy Casey Dreier has… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT A Conversation with Freeman Dyson Theres so much more to Freeman Dyson than the Dyson Sphere. The mathematician, scientist and author is one of the greatest and most original minds of our era. He has much to say to Mat Kaplan about the future of… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT It’s Rocket Science: Testing PlanetVac in the Mojave Desert Join Mat Kaplan in Californias Mojave Desert for special coverage of not one but two rocket flights and a real world test of PlanetVac, the innovative, radically simple way to collect surface samples from other worlds…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT A Sacred Place: The National Air and Space Museum with Ellen Stofan Planetary geologist Ellen Stofan has just become Director of the most popular museum in the United States. The NASM protects and shares the greatest collection of space and aviation treasures on Earth. Mat… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT A Space Station Crashes to Earth By the time you hear this weeks episode, Chinas Tiangong-1 may have spectacularly re-entered our planets atmosphere, raining metal on an unpredictable location. The Aerospace Corporations Bill Ailor, an expert on space debris, tells us theres little to worry… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Stephen Hawking: Spaceflight Pioneer! He is known for his breakthrough physics and popularizing of science, but Dr. Hawking also wanted to fly in space. Erik Viirre led the medical team that helped Stephen experience weightlessness. He says the adventure helped open the possibility of spaceflight… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Amateur Astronomers Work To Save Earth From Asteroids! Seven astronomers have been selected to receive Shoemaker NEO (Near Earth Object) grants from the Planetary Society. They and their observatories span the planet. Well meet an American and an Australian. Society Chief Scientist Bruce Betts provides… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Experience A Message From Earth”Inspired by the Voyager Gold Record It has been 40 years since Carl Sagan and others shared the best of humanity with the stars. A new online multimedia project has been created as a 21st century homage to the Golden Record…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT The Eyes of a New Mars Rover: Mastcam-Z Mat Kaplan attended a meeting of the science team for the zoom lens camera that will be atop the Mars 2020 rover mast. Planetary Scientist Jim Bell tells us how this new system will show us the… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT A New Congressional Caucus Backs Planetary Science Republican Randy Hultgren and Democrat Derek Kilmer celebrate formation of the new bipartisan, bicameral caucus of US representatives and senators. They have united behind exploration of our and other solar systems. Bill Nye shares his eye and ear… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Space, SETI, the Singularity and Shostak Where is everybody? That was the question physicist Enrico Fermi asked when he wondered why we hadnt yet met ET. What will happen if we do? Will humans lose the will to explore? These and other questions were taken… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Living in Space! Mat Kaplan talks with participants in the National Space Societys recent Space Settlement Summit about human destiny in space. Theres a consensus that we are making real progress, both technological and political, toward permanent installations on the Moon and elsewhere. The total… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Mysterious Tabbys Star, With Tabby Herself It may not host an alien megastructure but Tabbys Star still guards many mysteries of science. Astronomer and astrophysicist Tabetha Tabby Boyajian leads the worldwide team that is revealing this strange light in the sky. The Curiosity rover has… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Flowing Water on Mars? Not So Much Mars scientists dubbed them recurring slope lineae or RSLs. They sure looked like evidence of liquid water flowing down hillsides and ridges on the Red Planet. New research led by US Geological Survey Planetary Geologist Colin Dundas says… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Exploring the Latest Planetary Science Discoveries With Emily Lakdawalla A holiday edition of Planetary Radio welcomes the Planetary Societys Senior Editor back from the annual meeting of the American Geophysical Union. Emily reports on amazing developments in planetary science she discovered at the huge conference…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT President Trump Sets Course for the Moon On December 11th President Donald Trump signed a memorandum that firmly points the US space effort toward the Moon, but without providing many details. Planetary Society Director of Space Policy Casey Dreier fills in some of the gaps… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT A Visitor From the Stars: Oumuamua The first confirmed interstellar visitor to our solar system is a needle-shaped asteroid given the Hawaiian name Oumuamua. Karen Meech leads the team that is learning as much about it as possible before it leaves our neighborhood, never to… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Bob Richards and Moon Express Moon Express Founder and CEO Bob Richards shares an inspiring vision for a return to the Moon. It includes introduction of a sophisticated line of robotic spacecraft, the first of which may make a soft landing next year. Sample return… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Canada Rises And So Does the Sun Canada has a new Space Advisory Board, and the Planetary Societys Kate Howells is a member. Mat Kaplan also talks with Jeff Kuhn and Thomas Rimmele, two of the scientists working toward completion of the biggest solar telescope… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT The Honorable Adam Schiff”–Another Congressional Space Enthusiast Congressman Adam Schiffs California district includes the Jet Propulsion Laboratory. He is as enthusiastic a fan of the final frontier as you are likely to find under the capitol dome in Washington D.C. Planetary Society Digital Editor Jason… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Andy Weirs New Novel Puts a City on the Moon The author of #1 bestseller The Martian is back with Artemis, a superbly-researched, rollicking adventure in the first city on the Moon. You might win a copy of the book in the new Whats Up… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Searching for ET With Pete Worden Are we alone? The nearly sixty-year effort to answer that question has gotten a big boost from the Breakthrough Initiatives, funded by Yuri Milner and led by former NASA Ames Research Center director Pete Worden, who is our guest… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Pamela Gay and the Image Detective Astronomer Pamela Gay is probably best known as co-host of the Astronomy Cast podcast, but she is also Principal Investigator for the CosmoQuest virtual research facility. It offers fun and rewarding citizen science opportunities, including its newest, Image Detective…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Dawn: Ten Years of Exploration Dawn Mission Director and Chief Engineer Marc Rayman helps us salute the ion-engine powered spacecraft that first orbited asteroid Vesta in the main asteroid belt and then moved to dwarf planet Ceres, revealing two fascinating worlds. The new US National… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Australia Gets Serious About Space The Australian government announced that it would create a national space agency at the 68th annual International Astronautical Congress in Adelaide. Well talk with IAC 2017 CEO Brett Biddington about what this means for his country. Last weeks IAC was… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Long Live Cassini! Join us at JPL and Caltech on the bittersweet morning the Cassini spacecraft plunged into Saturn. Well hear from several of the missions leaders, including John Grunsfeld, Earl Maize, Linda Spilker and Ellen Stofan. Bill Nye salutes the mission team and calls… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Sailing on the Light of the Sun With Lou Friedman The co-founder and Executive Director Emeritus of the Planetary Society returns for a conversation about the allure of sailing through space. Digital editor Jason Davis reviews three exciting space sail projects, and LightSail Program Manager… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Cassini Project Scientist Linda Spilkers Last Update Before the Grand Finale Its the Grandest Finale. The spectacular Cassini missions exploration of Saturn will end on September 15th when the spacecraft plunges into the planet. Cassini Project Scientist Linda Spilker is back with one last mission… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Ed Stone and Forty Years of Voyager in Space It is most space fans favorite planetary science mission, and with good reason. We visit with the man who has been in charge of Voyager mission science for more than four decades. Youve got an extra… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Dark Energy Attracts? Astrophysicists Jason Rhodes and Alina Kiessling JPL astrophysicists Alina Kiessling and Jason Rhodes were brought together by their fascination over the mystery of dark energy. They talk with Planetary Radio about their research and the many missions they are contributing to, including… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Planetary Radio Live! Living on Mars The worlds most powerful solar telescope sits in Big Bear Lake, high above southern California. It has just been renamed for the man responsible for its creation. Well meet astrophysicist and helioseismologist Phil Goode, and well enjoy a tour… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Planetary Radio Live! Living on Mars Will humans live, work and thrive on Mars? What challenges must be met before we can become Martians? On July 20th, the anniversary of the Apollo 11 moon landing, Mat Kaplan welcomed an outstanding panel of experts for conversation… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Emily Lakdawalla on the Last Orbits of Cassini The Cassini Mission has less than two months to go before it ends with a spectacular plunge into the beautiful ringed world. Planetary Society Senior Editor Emily Lakdawalla has prepared a guide to the last orbits by… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT 20 Years on Mars with Matt Golombek When the Pathfinder lander reached Mars 20 years ago it began a Martian renaissance that has never paused. JPL scientist Matt Golombek was the missions Project Scientist. He looks back and to the future of our explorations at… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Happy Asteroid Day Asteroid Day, June 30th, marks the anniversary of the great Tunguska impact that leveled a Siberian forest. It reminds us that a Near Earth Object can destroy a city or even a civilization. Former Minor Planet Center Director Tim Spahr reviews our… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Thomas Edison, Eclipse Chaser! The great inventor was just one of many men and women who made their way across the American West to view and document the total solar eclipse of 1878. Edison would test a new heat-detecting instrument. Vassar astronomer Maria Mitchell and… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Julie Webster and the Art of Spacecraft Endurance How do you keep a dazzlingly complex spacecraft in good health after 20 years in space? Thats the challenge for Julie Webster and her team of engineers supporting the Cassini mission at Saturn. Jason Davis reports on… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Spectacular Jupiter! Have you seen its stunning image of Jupiters south pole? The Juno orbiter is surpassing expectations and delivering surprising science. Scott Bolton, the missions Principal Investigator, is back with a thrilling report. Weve reached another key milestone along LightSail 2s road to space…. »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Buzz Aldrin and Other Martians He walked with Neil Armstrong on the moon, but that may not be his greatest legacy. Buzz Aldrin was joined by other space stars at the recent Humans To Mars Summit. Bill Nye returns with his sense of awe turned… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Human Spaceflight: Coming Back to America Astronauts may soon ride on US rockets and in US spaceships for the first time since the last Space Shuttle flight. Jon Cowart of NASA is working with SpaceX toward the first launch of a Dragon spacecraft with humans… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT NASA Leaders on Getting Humans to Mars The human journey to the Red Planet is long and hard, but Mats conversation with three NASA Associate Administrators at the Humans to Mars Summit was filled with cautious optimism. Emily Lakdawalla shares a beautiful image of Saturn… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Be There! The Great American Eclipse Our ongoing coverage of preparation for the Great American Eclipse takes us to Southern Illinois University Carbondale where a huge celebration is planned. Senior Editor Emily Lakdawalla is back! She was at JPL when Cassini began the final phase… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Bill Nye Saves the World With Space It was a big week for the Science Guy, and for science. Bill Nye served as honorary co-chair of the March for Science in Washington DC. His new Netflix series, Bill Nye Saves the World, premiered the next… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT McDonald Observatory and the Quest for Dark Energy The University of Texas at Austins observatory is high in the hills of west Texas. In this special episode, Mat Kaplan joins the tens of thousands who visit it each year. The occasion was the rededication of… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Aerospace Corporation President and CEO Steve Isakowitz The Aerospace Corporation has been innovating since 1960. Now its headed by a former leader of New Space company Virgin Galactic. President and CEO Steve Isakowitz talks about the evolving culture of the space industry. Heard about NASAs… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Mars Atmosphere Lost in Space! Mars was once a warm and wet world. Then its dense, protective atmosphere mostly vanished. Learning why was one of the greatest mysteries in planetary science. The answer has just been delivered by the MAVEN orbiter. Principal Investigator Bruce Jakosky… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT The Great American Eclipse”Be Part of It! Its coming! Will you be in the path of totality? Astronomers Without Borders President Mike Simmons says be there if you can. He also tells us about AWBs Google-funded outreach program that will use the August 21st total… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Hope for Pluto”Should We Re-Redefine Planets? Planetary geologist Kirby Runyon is lead author of an abstract that proposes a new, geophysical definition of what a planet is. It would grant our solar system 110 planets, including Pluto and the moon. Up, up and away with… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT The Worlds of TRAPPIST-1 The discovery of seven, Earth-sized planets in a nearby solar system was announced last week. Astrophysicist and planetary scientist Sara Seager was part of the NASA press conference. Now she joins us to share her excitement about this find that includes… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Near Earth Objects–The Killer Asteroid Threat Leaders of the quest to find, understand and protect ourselves from the asteroids and comets called Near Earth Objects gathered with host Mat Kaplan for a live conversation about this existential threat from space. This special episode presents excerpts… »»»

Every Tuesday: 11am Pacific – 2pm Eastern – 19:00 GMT Earth Microbes! Welcome to Mars University of Arkansas grad student Rebecca Mickol and her team have demonstrated that some Earth bacteria can survive in the extremely thin atmosphere of Mars. Could Martian bacteria thrive under the same conditions? Jason Davis looks at the Mars vs…. »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Ice, Snow and Lava: Exploring Antarcticas Mount Erebus Earths southernmost active volcano may also be its most remote. Rosaly Lopes and Michael Carroll recently spent a few frigid days on the slopes of Antarcticas Mount Erebus. What they learned may help us understand volcanos on… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Chief Scientist Ellen Stofan Leaves NASA For well over three years, planetary scientist Ellen Stofan has worked directly with NASA Administrator Charles Bolden to help coordinate and expand the myriad science efforts by the agency. We talk with her as she ends this remarkable tenure…. »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Ben Miller Says The Aliens are Coming! British physicist turned comedian and actor Ben Miller has written The Aliens are Coming– The Extraordinary Science Behind our Search for Life in the Universe. It starts with the Big Bang and takes readers on a fascinating ride… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT A Little Rocket Company Shoots for the Moon CEO Randa Milliron introduces us to Interorbital Systems, which wants to put your payload in orbit for as little as $8,000. Can they do it? Emily Lakdawalla returns with a preview of 2017s biggest solar system exploration… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Marvelous Martian MAVEN MAVEN, the Mars Atmosphere and Volatile Evolution orbiter, has gone a long way toward solving the mystery of the Red Planets missing water and air. The University of Colorados Nick Schneider says it is also revealing gorgeous clouds, auroras and glowing skies…. »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Art That Captures the Beauty and Science of Space Marilynn Flynn, Simon Kregar and Rick Sternbach are masters of space art. They talk about how their work furthers science and captures the imagination. The winner of this weeks space trivia contest will win a beautiful… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT A Giant Telescope and Remembering John Glenn Space historian John Logsdon remembers American hero John Glenn. Planetary Society CEO Bill Nye was a big fan of the Friendship 7 astronaut. Then we get an update on the Giant Magellan Telescope from Patrick McCarthy. Emily Lakdawalla… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Running Before the Sun: Astronomer Jay Pasachoff No one is more excited about eclipses than famed solar astronomer and author Jay Pasachoff. He looks forward to the total solar eclipse in August of 2017. With Emily Lakdawalla away, Mat Kaplan welcomes back Planetary Society Digital… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Leading the Search: Bill Diamond of the SETI Institute The SETI Institute is about much more than the Search for Extraterrestrial Intelligence. President and CEO Bill Diamond of the Institute explains. Bill Nye reviews two more stories that illustrate how hard it is to go… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Pluto and Titan and Iran, Oh My! Back to the annual meeting of the AAS Division for Planetary Sciences this week, where Mat Kaplan visited with experts on worlds of ice including Titan and Pluto, with a side trip to the dunes of Iran. Emily… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Matt Taylor Rocks Rosetta Last year it was New Horizons at Pluto. In 2016, the thrilling end of the Rosetta comet mission generated the greatest public interest and enthusiasm. Mat Kaplan talks with Matt Taylor, the Rosetta Project Scientist, just two weeks after the spacecraft… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Alan Stern and a Triumph at Pluto Alan Stern of the New Horizons mission to Pluto and beyond was in Pasadena for the annual meeting of the American Astronomical Societys Division for Planetary Sciences. He joined Mat Kaplan for a very special conversation down the… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Charley Kohlhase and the Greatest Voyage How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Farewell Rosetta The European Space Agency s magnificent Rosetta mission ended last week as the spacecraft gently touched down on the comet it has revealed. You ll hear highlights of the final countdown, and Emily Lakdawalla s impressions gained at the European Space Operations Center…. »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Rocket Road Trip! Planetary Society Digital Editor Jason Davis returns with the story of the ten-day trek across the South he just completed with two Society colleagues. Emily Lakdawalla has the announcement of new evidence for water plumes on Jupiter s moon Europa. Bill Nye… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Cassini at Saturn: The Final Year The great Cassini spacecraft has a year to go before it plunges into the ringed planet. Project Scientist Linda Spilker returns with more amazing mission science. Emily Lakdawalla introduces us to the wonders of Gaia and its one billion… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT OSIRIS REx: The Voyage to Bennu Begins, With Dante Lauretta In two years a Near Earth Asteroid now known as Bennu will have a visitor from Earth. OSIRIS REx Principal Investigator Dante Lauretta reports on his mission s successful launch. Bill Nye was in Florida… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Spinoffs! Sharing NASA Technology In its nearly five decades, NASA has created or improved thousands of technologies, processes and innovations. Dan Lockney is in charge of making sure these solutions are found and utilized by industries and others in need. You really must see (and… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT The Pale Red Dot: A Planet Called Proxima b The announcement was made just days ago. Co-discoverer Michael Endl tells us about the discovery of a roughly Earth-mass planet orbiting in the habitable zone of the closest star to our own. Juno has made its… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Could the Soviet Union Have Won the Space Race? Space historian and policy expert John Logsdon joins Mat Kaplan for a fascinating conversation about how the US could have lost the race to the moon. Emily Lakdawalla prepares us for the launch of OSIRIS REx… »»»

Every Tuesday: 9:30am Pacific – 12:30pm Eastern – 17:30 GMT Sailing the Canyons of Titan Steep canyons on Saturn’s moon Titan are filled with liquid methane. That’s the discovery just announced by an international team of Cassini scientists, including Alex Hayes. Emily Lakdawalla takes us up to Curiosity on Mars, while Bill Nye celebrates the… »»»

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